Base block for a toy construction set



FIG. 1 is an upper front perspective view of a base block for a toy construction set showing our new design;

FIG. 2 is a lower front perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a left side elevation view thereof; and,

FIG. 8 is a right side elevation view thereof. 

CLAIM The ornamental design for a base block for a toy construction set, as shown and described. 